YASKAWA V1000

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b5-14: PID Feedback Loss Detection Time
Sets the time that the PID feedback has to fall below b5-13 before feedback loss is detected.
No. Name Setting Range Default
b5-14 PID Feedback Loss Detection Time 0.0 to 25.5 s 1.0 s
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b5-36: PID Feedback High Detection Level
Sets the feedback level used for PID feedback high detection. The PID feedback has to exceed this level for longer than
the time b5-37 before feedback loss is detected.
No. Name Setting Range Default
b5-36 PID Feedback High Detection Level 0 to 100% 100%
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b5-37: PID Feedback High Detection Time
Sets the time for that the PID feedback has to exceed b5-36 before feedback loss is detected.
No. Name Setting Range Default
b5-37 PID Feedback High Detection Time 0.0 to 25.5 s 1.0 s
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PID Sleep
The
PID Sleep function stops the drive when
the PID output or the frequency reference falls below the PID Sleep operation
level for a certain time. The drive will resume operating once the PID output or frequency reference rises above the PID
Sleep operation level for the specified time. The operation is explained in the figure below.
PID Output
PID Sleep Function
Start Level
( b5-15)
Sleep Delay Time
Sleep
Delay Time
Run command enabled
Continues to output “During Run”
Internal Run
command
External Run
command
During Run
Stop
b5-16 b5-16
Run
Figure 5.20 PID Sleep Operation
Notes on using the PID Sleep function:
• The PID Sleep function is always active, even if PID control is disabled.
• The method the Sleep function uses to stop the motor is defined by parameter b1-03.
• The parameters necessary to set up the PID Sleep function are explained below.
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b5-15: PID Sleep Function Start Level
Sets the level used for PID Sleep.
The drive goes into Sleep
mode if the PID output or frequency reference is smaller than b5-15 for longer than the time set
in b5-16. It resumes the operation when the PID output or frequency reference is above b5-15 for longer than the time set
in b5-16.
No. Name Setting Range Default
b5-15 PID Sleep Function Start Level 0.0 to 400.0 Hz 0.0 Hz
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b5-16: PID Sleep Delay Time
Sets the delay time to activate or deactivate the PID Sleep function.
No. Name Setting Range Default
b5-16 PID Sleep Delay Time 0.0 to 25.5 s 0.0 s
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b5-17: PID Accel/Decel Time
The PID acceleration/deceleration time is applied on the PID setpoint value.
As the normal acceleration times C1-oo are applied after the PID output, they reduce the responsiveness of the system
and can cause hunting or over- and undershooting when the setpoint changes quickly. Using the PID acceleration/
deceleration time instead helps to avoid such problems.
5.2 b: Application
YASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual
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Parameter Details